The Psalm called Jubuilate begins with the word for a joyous cry. From the American Heritage:

Jubilate, NOUN:
1a. The 100th Psalm in the King James Bible and in most modern Catholic versions or the 99th in the Vulgate. b. A musical setting of the Jubilate. 2. The third Sunday after Easter. 3. A song or an outburst of joy and triumph.

ETYMOLOGY:
Middle English, from Latin ibilte, second person pl. imperative of ibilre, to raise a shout of joy, the first word of the psalm.

 Not sure where the Hebrew root goes.

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